List of highways numbered 343

The following highways are numbered 343:

Australia
- Local Bendigo Highway

Canada

 * Manitoba Provincial Road 343
 * Newfoundland and Labrador Route 343
 * Prince Edward Island Route 343
 * Qc343.svg Quebec Route 343
 * Saskatchewan Highway 343

Japan

 * Japanese National Route Sign 0343.svg Japan National Route 343

Nigeria

 * NGA road A343.svg A343 highway (Nigeria)

United States

 * Connecticut Highway 343.svg Connecticut Route 343
 * Levy County 343.svg County Road 343 (Levy County, Florida)
 * Georgia 343.svg Georgia State Route 343 (former)
 * Louisiana 343.svg Louisiana Highway 343
 * MD Route 343.svg Maryland Route 343
 * M-343 rectangle.svg M-343 (Michigan highway)
 * New York:
 * NY-343.svg New York State Route 343
 * Erie County 343 NY.svg County Route 343 (Erie County, New York)
 * NC 343.svg North Carolina Highway 343
 * OH-343.svg Ohio State Route 343
 * PA-343.svg Pennsylvania Route 343
 * PR urban primary 343.svg Puerto Rico Highway 343
 * Secondary Tennessee 343.svg Tennessee State Route 343
 * Texas:
 * Texas 343.svg Texas State Highway 343 (former)
 * Texas Loop 343.svg Texas State Highway Loop 343
 * Virginia 343.svg Virginia State Route 343
 * WY-343.svg Wyoming Highway 343